Aerie knelt in the test plot beside the glass dome, pressing a crushed leaf against a scrape on their own forearm. The skin reddened, then calmed. They wrote the result in the crystal-paged ledger open on the small metal-trayed table. One safe herb. Hundreds still unknown. Aerie was building a garden where every wounded creature of Zoastrya could find the herb that healed it, and today that promise felt very thin. The glowing crystal pillar at the edge of the plot pulsed twice. A creature had arrived to wait. Aerie stood and saw a small furred thing curled near the base, one wing torn, breathing fast. They did not know its kind. They did not know what would soothe it and what would stop its heart. Aerie flipped through the shimmering pages of the ledger. The column for winged mammals was nearly empty. Six herbs marked untested. Three marked dangerous for similar creatures. One wrong choice could poison the very animal they were trying to save. Their hands stayed steady, but their throat tightened. They ran to the path beyond the mushroom-shaped dome and called for the steward who tended the deeper groves. Eldrin Tarnai came without hurry, staff in hand, eyes already reading the creature before he reached it. "Moonmoth bat," he said. "Bitterroot kills them. Try silverleaf, ground fine, on the tear. Water, not oil." He pointed to a pale plant near the test plot. "Start small. Watch the breathing for a count of fifty." Aerie did exactly as told. The bat's breathing slowed and evened. Aerie wrote silverleaf into the ledger in steady ink, then bitterroot in red beside it. One creature saved. One page filled. Thousands of pages still blank — and Aerie understood, finally, that they could not learn this alone.

Word of the healed moonmoth bat spread fast. By dawn, three new creatures waited near the glass dome. By noon, six more. Aerie counted them and felt the ledger grow heavy in their hands. The garden was not ready. The east bed still would not hold water. And now the line of waiting creatures stretched past the path. A shimmering unicorn stood at the back of the line, favoring one leg. A small fox-thing licked a burn on its paw. Aerie knew the truth at once: shelter and food had to come before any new planting. A hungry creature could not wait for a herb to grow. Aerie dragged a stone basin from the storage shed and set it in the open yard. They fitted the crystalline vents Eldrin had once shown them, and a soft glowing liquid began to pool inside. One trough. Enough for a day, maybe two. They ran for the steward. Eldrin came, read the yard in one slow look, and set his staff down. "Too many for one garden," he said. "You feed. I will sort them. Worst hurt first. The rest wait in the shade." They worked until the sun dropped. Eldrin moved among the creatures with quiet hands. Aerie filled the trough again and again. The unicorn drank. The fox-thing slept. No one died waiting. But when Aerie looked at the east bed, still cracked and dry, they knew the next wave would be larger. The garden had to grow, and it had to grow now. Eldrin paused at the gate before leaving. "You cannot hold this alone," he said. "Tomorrow we send word out. Others will come." Aerie nodded. The promise had not broken. But it had outgrown them, and that was its own kind of answer.

Morning came too soon. Aerie crossed the yard to the small brass-framed greenhouse where the dried herbs were kept. The shelves looked thinner than yesterday. Silverleaf bundles, root powders, bound stems — all halved by the week's rush. Aerie counted twice. The numbers did not change. They carried what was left to the marble weighing station and set the scale swinging. Each pinch was measured now, not poured. A burn salve took half what it should. A poultice, less. Aerie wrote each ration in the ledger and felt the pen drag. One more wounded creature, and there would be nothing to give. Outside, the last green stems hung from the copper drying frame, curling slow in the sun. Not ready. Not for days. Aerie touched a leaf and it crumbled at the edge. The garden could not refill itself fast enough. The east bed sat cracked behind them, still useless. Eldrin came through the gate at midmorning, staff in hand. Aerie met him at the path. "The stores will not last," they said. "Two more days. Maybe one." Eldrin looked at the shelves, then at the line of resting creatures. He did not soften it. "Then we grow up, not out." He walked them to the open ground beside the dome and drew a circle in the dirt with his staff. "A spiral tower. Stacked beds. Water falls from the top and feeds each ring as it drops. You will get four gardens in the space of one. And the water cannot run off, because it has nowhere to go but down." Aerie stared at the circle. It was the answer to the east bed, too — soil that could not lose what it was given. "I cannot build that alone," Aerie said. Eldrin nodded. "The others arrive tonight." By dusk, the herbarium shelves held one day's worth. Aerie locked its brass doors and stood in the yard with the circle still drawn at their feet. The stores were nearly gone. But the ground was marked, and hands were coming. For the first time in a week, the next problem was one Aerie could name out loud.

Dusk thickened fast. Aerie stood in the yard with the spiral circle still drawn at their feet and counted the hours left. The helpers would arrive in the dark. They would arrive tired. If there was no bed, no food, no light to guide them, dawn would find them too spent to lift a single stone. Aerie started with the path. They hauled the tall crystal-and-brass arch from the storage lean-to and set it at the gate, lighting a small fire bowl beneath each pillar. The crystal caught the flame and threw it wide. A traveler a mile off would see it. Welcome, the light said. Here. This way. The shelter came next, and Aerie's hands shook at the size of it. Then a small voice piped from the herb rows. A tiny winged figure hovered there, pink hair bright, a glowing bloom cupped in her palms. She spilled pollen onto the canvas bundle and the fabric lifted on its own, panels unfurling pink and pearl. Aerie staked the corners while the fairy sang the ridge pole straight. A long dome tent rose in minutes, soft light pulsing through its sides. "You shouldn't do the kitchen alone either," said a steadier voice. Whisper stepped through the arch, lantern swinging, apron pockets clinking with little jars. She was small and brown-eyed and already rolling up her sleeves. "Eldrin sent me ahead. Said you'd be trying to build a village by yourself." Together they raised the open-air hall beside the dome — a brass lattice shell, crystal panels, a chimney for the stew pot Whisper hung inside it. The fairy strung lights along the rafters. Aerie laid out bowls, blankets, water. By the time hoofbeats and footsteps sounded on the road, three buildings glowed in the yard where an hour ago there had only been dirt. The helpers came through the lit arch one by one. Aerie counted them in, pointed each to a bed, watched them eat and lie down. The last lamp dimmed near midnight. They would wake rested. They would build at dawn. Aerie sat on the threshold of the mess hall and let out a breath they had been holding since the herb shelves emptied. The shelter was ready. Tomorrow the ground would open, and they would need every pair of hands they had just saved.

Dawn came gray and cold. Aerie walked to the east bed alone, before the helpers stirred. The ground there was the worst of it — shallow, knotted with old roots. The tower would rise here, or not at all. Aerie drew the long metal probe from their belt. They pressed it down at the first mark, read the number, moved on. Inch by inch they mapped the buried mess. Some places gave only a hand's depth before the probe struck root. Others sank deep and easy. The pattern was not random. It was a map. They carried each pulled core to the open brass cabinet by the herb rows and slid the samples into labeled vials behind the glass. Pale clay. Black loam. A tangle of dead root no spade should meet blind. By the time Whisper found them, the cabinet held the whole truth of the bed. "You've been at this for hours," Whisper said softly. Aerie nodded and handed her a vial. "Now I know where to dig. And where not to." Together they set the tall crystal markers across the yard, one for each footing the tower would need. The pillars caught the early light and hummed faint blue where roots ran deep beneath. Aerie shifted three of them a full pace east, away from the worst tangles. The footprint settled. The plan held. When the helpers came out with their tools, Aerie pointed to the glowing pillars and spoke clearly. "We dig here. Not there. Follow the light." The first spade broke ground clean. No collapse. No blind cut. The tower had a place to stand.